WO2021217376A1 - Procédé, appareil et système de communication - Google Patents

Procédé, appareil et système de communication Download PDF

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Publication number
WO2021217376A1
WO2021217376A1 PCT/CN2020/087332 CN2020087332W WO2021217376A1 WO 2021217376 A1 WO2021217376 A1 WO 2021217376A1 CN 2020087332 W CN2020087332 W CN 2020087332W WO 2021217376 A1 WO2021217376 A1 WO 2021217376A1
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WO
WIPO (PCT)
Prior art keywords
terminal
service
communication interface
data
network element
Prior art date
Application number
PCT/CN2020/087332
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English (en)
Chinese (zh)
Inventor
欧阳国威
刘俊
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2020/087332 priority Critical patent/WO2021217376A1/fr
Priority to CN202080073459.8A priority patent/CN114586394A/zh
Publication of WO2021217376A1 publication Critical patent/WO2021217376A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • terminal A can use the PC5 interface between terminal A and terminal B to send data to terminal B on the sidelink resource.
  • the base station can use the network scheduling operation mode (network scheduled operation mode) to configure the side chain for terminal A Road resources.
  • the network scheduling operation mode may refer to that the base station uses dynamic scheduling or semi-persistent scheduling to configure side link resources for the terminal.
  • the autonomous resource selection mode of the terminal may refer to that the terminal selects the side link resources in the resource pool by means of resource frame sensing.
  • the terminal adopts the terminal autonomous resource selection mode to determine the side link resources, sensing is required, and when the terminal uses the network scheduling operation mode, frame listening is not required. Therefore, the terminal adopts the terminal autonomous resource selection mode to determine the side link resources.
  • the power consumption of the resource is higher than that of the terminal using the network scheduling operation mode to determine the power consumption of the side link resource. Therefore, the power consumption of the terminal in the RRC-inactive state to send side link data using the side link resource is higher than that of the terminal in the RRC state. -The power consumption of the terminal in the active state to use the side-link resource to send the side-link data.
  • an embodiment of the present application provides a communication method, including: the access network device sends resource information to the terminal, the resource information is used to characterize the direct communication interface resource, and the direct communication interface resource is used when the terminal is in the wireless resource. Control RRC-inactive state, or transmit data when in RRC-active state and in power saving mode.
  • the access network device determining to release the direct communication interface resources configured for the terminal includes: the access network device receives instruction information from the access management network element, and the instruction information is used Instructed to release the direct communication interface resources configured for the terminal. The access network device determines to release the direct communication interface resources configured for the terminal according to the instruction information.
  • the foregoing method may further include: the access network device determines, according to the fourth indication information, that the terminal is allowed to be in the RRC-activated state, and the network-based scheduling mode is used when the power saving mode is adopted.
  • the directly connected communication interface resources continue to transmit the data of the first application.
  • the identifier of at least one service is carried in a first message, and the first message further includes a first parameter, and the first parameter is used to characterize that the terminal requests to use the direct communication interface.
  • Use network scheduling mode to transmit data may further include: the access management network element sends first indication information to the access network device or terminal according to the first parameter, where the first indication information is used to indicate that the terminal is allowed to use the network-based scheduling mode in the RRC-inactive state
  • the directly connected communication interface resource transmits the data of the first application, and the first application belongs to at least one service.
  • the above method further includes: the access management network element receives a first quality of service parameter from the terminal, where the first quality of service parameter is the terminal's request to transmit data on the directly connected communication interface The quality of service parameters used.
  • the allowed service is a service of the terminal that is allowed to be transmitted through the direct communication interface.
  • the communication device may be a terminal or a chip applied to the terminal, the communication device includes: a communication unit, and a processing unit, wherein the processing unit is used for processing information, and the communication unit is used for sending and receiving information.
  • the communication unit is configured to receive resource information from the access network device, and the resource information is used to characterize the resources of the directly connected communication interface.
  • the communication unit is also used to transmit data through direct communication interface resources, where the terminal is in a radio resource control RRC-inactive state, or the terminal is in an RRC-active state, and the terminal adopts a power saving mode.
  • the direct communication interface resource is a direct communication interface resource based on a network scheduling mode.
  • the communication unit is further configured to request direct communication interface resources from the access network device.
  • the above-mentioned data is data of the first application of the terminal, and the direct communication interface resource is used to transmit the data of the first application.
  • the first application is an application that uses a direct communication interface for communication, for example, a direct communication interface is used to send/broadcast information of a vulnerable roadside unit (VRU).
  • VRU vulnerable roadside unit
  • the first application belongs to the permitted service of the terminal, and the processing unit is further used to determine the identifier of the permitted service of the terminal.
  • the processing unit is configured to receive, through the communication unit, the identifier of the permitted service from the terminal that accesses the management network element, so as to determine the identifier of the permitted service of the terminal.
  • the identifier of at least one service is carried in the first message, and the first message further includes a first parameter, which is used to characterize that the terminal requests to use on the direct communication interface Network scheduling mode transmits data.
  • a first parameter which is used to characterize that the terminal requests to use on the direct communication interface Network scheduling mode transmits data.
  • the first parameter is used to indicate to the access management network element that the terminal requests to use the network scheduling mode to transmit data on the directly connected communication interface. This is convenient for the network side to determine that the terminal requires the use of the network scheduling mode to transmit data on the PC5 interface communication link, that is, the terminal requests to use the direct communication interface resource configured by the access network device to transmit data.
  • the data is the data of the first application
  • the direct communication interface is the PC5 interface
  • the processing unit is also used to generate the PC5 interface quality of service flow (PC5 QoS Flow) corresponding to the first application. ).
  • the processing unit is also used to associate the data of the first application with the quality of service flow of the PC5 interface.
  • the first application in the embodiment of the present application may be one of the permitted services of the terminal.
  • the PC5 interface quality of service flow includes a PC5 interface packet filter, where a parameter value in the PC5 interface packet filter is an identifier of the first application.
  • the one parameter may be a PC5 interface quality of service flow identifier (PC5 QoS Flow identifier, PFI).
  • the processing unit is configured to associate the data of the first application with the PC5 interface quality of service flow according to the PC5 interface packet filter, so that the data of the first application is transmitted in the PC5 interface quality of service flow.
  • the processing unit is configured to receive configuration information from the policy control network element through the communication unit, and the processing unit is configured to generate a PC5 interface quality of service flow corresponding to the first application according to the configuration information .
  • the processing unit is configured to generate the PC5 interface quality of service flow corresponding to the first application according to the pre-configured parameters.
  • the processing unit before the communication unit transmits data through the direct communication interface resource, the processing unit is further configured to control the terminal to enter the RRC-inactive state. Or the processing unit is also used to control the terminal to enter the power saving mode in the RRC-active state.
  • the communication unit is further configured to receive a first notification message from the access network device, where the first notification message is used to notify the terminal to enter the RRC-inactive state.
  • the corresponding processing unit is configured to control the terminal to enter the RRC-inactive state, and includes: a processing unit, configured to control the terminal to enter the RRC-inactive state according to the first notification message.
  • the communication unit is further configured to receive a first notification message from the access network device, where the first notification message is used to notify the terminal to enter the RRC-activated state, and uses power saving model.
  • the corresponding processing unit is configured to control the terminal to enter the RRC-activated state and adopt the power saving mode, including: a processing unit, configured to control the terminal to enter the RRC-activated state and adopt the power saving mode according to the first notification message.
  • the communication unit is further configured to send a fifth message to the access management network element, where the fifth message indicates that the terminal supports sending the data of the first application.
  • the communication unit is also used for the terminal to send a third parameter to the access management network element, and the third parameter is used to characterize that the terminal requests to use the network scheduling mode on the direct communication interface .
  • the communication unit is further configured to receive second indication information, the second indication information is used to indicate that the terminal is allowed to use network-based Directly connected communication interface resources in scheduling mode transmit data.
  • the communication unit is configured to transmit data through the directly connected communication interface resource, and includes: a communication unit, configured to transmit the above-mentioned data through the directly connected communication interface resource according to the second instruction information.
  • the processing unit may be a processor, and the communication interface may be an input/output interface, a pin, a circuit, or the like.
  • the processing unit executes the computer program code stored in the storage unit, so that the terminal implements the communication method described in the first aspect or any one of the possible implementations of the first aspect, and the storage unit may be in the chip
  • the storage unit (for example, a register, a cache, etc.) may also be a storage unit (for example, a read-only memory, a random access memory, etc.) located outside the chip in the terminal.
  • the processor, the communication interface and the memory are coupled with each other.
  • the embodiments of the present application provide a communication device, which can implement the second aspect or any one of the communication methods described in the possible implementation of the second aspect, so the second aspect can also be implemented. Aspect or the beneficial effects in any possible implementation manner of the second aspect.
  • the communication device of this type may be an access network device, or a device that can support the access network device to implement the second aspect or any one of the possible implementation manners of the second aspect. For example, it is applied to chips in access network equipment.
  • This kind of communication device can implement the above method by software, hardware, or by hardware executing corresponding software.
  • an embodiment of the present application provides a communication device, including: a processing unit and a communication unit, the processing unit is used to perform information or data processing, and the communication unit is used to send and receive information or receipts.
  • the communication unit is used to send resource information to the terminal.
  • the resource information is used to characterize the direct communication interface resources.
  • the direct communication interface resources are used when the terminal is in the radio resource control RRC-inactive state, or the terminal is in the RRC-inactive state. Active state, but the terminal transmits data when the power saving mode is adopted.
  • the communication unit is configured to receive a preferred scheduling mode from a terminal that accesses the management network element.
  • the communication unit is configured to send resource information to the terminal, including: the processing unit is configured to use the communication unit to send resource information to the terminal according to a preferred scheduling mode of the terminal.
  • the priority scheduling mode is the network scheduling mode.
  • the allowed service is a service of the terminal that is allowed to be transmitted through the direct communication interface.
  • the communication unit is configured to send a first notification message to the terminal, where the first notification message is used to notify the terminal to enter the RRC-inactive state from the RRC-active state.
  • the processing unit is configured to, according to the third instruction information, The first notification message is sent to the terminal through the communication unit, and the first notification message is used to notify the terminal to enter the RRC-inactive state.
  • the third indication information is used to indicate that when the Uu interface between the access network device and the terminal has no data for a preset time (for example, 30s), the access network device needs to configure the terminal to enter the RRC-activated state RRC-inactive state, and in the RRC-inactive state, the terminal can continue to use the direct communication interface resources configured by the access network device for the terminal to transmit data.
  • the access network device When there is no data on the Uu interface between the access network device and the terminal for a preset time (for example, 30s), the access network device needs to keep communicating with the terminal The RRC connection between the two, and the access network equipment needs to configure the terminal to use power-saving technology.
  • a preset time for example, 30s
  • the communication unit is configured to receive instruction information from an access management network element, where the instruction information is used to instruct the terminal to stop transmitting data through the directly connected communication interface resource.
  • the processing unit is configured to determine, according to the instruction information, that the terminal stops transmitting data through the direct communication interface resource.
  • the processing unit is configured to determine to release the direct communication interface resource configured for the terminal, and the processing unit releases the direct communication interface resource configured for the terminal.
  • the processing unit is configured to determine to release direct communication interface resources configured for the terminal, and includes: a communication unit, configured to receive instruction information from an access management network element, the instruction The information is used to indicate the release of direct communication interface resources configured for the terminal.
  • the processing unit is configured to determine to release the direct communication interface resources configured for the terminal according to the instruction information.
  • the communication unit is further configured to receive the third indication information or the fourth indication information from the access management network element.
  • the processing unit is further configured to determine, according to the fourth indication information, that the terminal is allowed to be in the RRC-active state and use the direct communication interface based on the network scheduling mode when the power saving mode is adopted.
  • the resource continues to transmit the data of the first application.
  • the processing unit is further configured to determine according to the third indication information that the terminal is allowed to use the direct communication interface resource based on the network scheduling mode to continue transmission when the terminal is in the RRC-inactive state.
  • Application data is further configured to determine according to the third indication information that the terminal is allowed to use the direct communication interface resource based on the network scheduling mode to continue transmission when the terminal is in the RRC-inactive state.
  • the communication unit is further configured to receive a first request message from the terminal, and the first request message is used to request that the terminal be configured to transmit the first application on the direct communication interface. Data resources.
  • the processing unit may be a processor, and the communication interface may be an input/output interface, a pin, or a circuit.
  • the processing unit executes the computer program code stored in the storage unit, so that the access network device implements the communication method described in the second aspect or any one of the possible implementations of the second aspect, and the storage unit may be the
  • the storage unit (for example, register, cache, etc.) in the chip may also be a storage unit (for example, read-only memory, random access memory, etc.) located outside the chip in the access network device.
  • the processor, the communication interface and the memory are coupled with each other.
  • the embodiments of the present application provide a communication device, which can implement the third aspect or any one of the possible implementations of the third aspect described in the communication method, so the third aspect can also be implemented. Aspect or the beneficial effects in any possible implementation manner of the third aspect.
  • the communication device of this type may be an access management network element, or a device that can support the access management network element to implement the third aspect or any one of the possible implementation manners of the third aspect. For example, it is applied to the chip in the access management network element.
  • This kind of communication device can implement the above method by software, hardware, or by hardware executing corresponding software.
  • an embodiment of the present application provides a communication device.
  • the communication device includes a communication unit configured to obtain contract information of a terminal.
  • the communication unit is also used to send the terminal's allowed service identification to the terminal according to the contract information.
  • the processing unit is configured to obtain the identifier of the permitted service of the terminal from the subscription information. Then the processing unit sends the identification of the allowed service of the terminal to the terminal through the communication unit.
  • the identifier of the at least one service is used to indicate the service that the terminal requests to be transmitted on the direct communication interface.
  • the identifier of at least one service is carried in a first message, and the first message further includes a first parameter, and the first parameter is used to characterize that the terminal requests to use the direct communication interface.
  • the processing unit is further configured to send first indication information to the access network device or terminal according to the first parameter, where the first indication information is used to indicate that the terminal is allowed to use the direct communication interface based on the network scheduling mode in the RRC-inactive state
  • the resource transmits data of the first application, and the first application belongs to at least one service.
  • the first message further includes a first link identifier, and the first link identifier indicates a communication link used for the terminal to transmit data on the directly connected communication interface.
  • the communication unit is further configured to receive a first quality of service parameter from the terminal, where the first quality of service parameter is a service used by the terminal to request data transmission on the directly connected communication interface Quality parameters.
  • the communication unit is further configured to receive a second parameter from the terminal, and the second parameter is used to characterize that the terminal stops transmitting data on the directly connected communication interface.
  • the access management network element instructs the access network device to release the directly connected communication interface resources of the terminal according to the second parameter.
  • the communication unit is further configured to send the preferred scheduling mode of the terminal to the access network device.
  • the allowed service is a service of the terminal that is allowed to be transmitted through the direct connection communication interface.
  • the communication unit is further configured to receive a third parameter from the terminal, and the third parameter represents that the terminal requests to use the network scheduling mode on the direct communication interface.
  • the access management network element sends second indication information to the access network device or the terminal according to the third parameter, where the second indication information is used to indicate that the terminal is allowed to use the network-based network in the RRC-inactive state.
  • Directly connected communication interface resources in scheduling mode transmit data.
  • an embodiment of the present application provides a communication device.
  • the communication device may be an access management network element or a chip in the access management network element.
  • the communication device may include a communication unit.
  • the communication device may also include a processing unit and a storage unit.
  • the communication unit may be a transceiver for sending and receiving data/information, and the storage unit may be a memory.
  • the storage unit is used to store computer program code, and the computer program code includes instructions.
  • the processing unit may be a processor. The processing unit executes the instructions stored in the storage unit, so that the access management network element implements a communication method described in the third aspect or any one of the possible implementation manners of the third aspect.
  • the processor, the communication interface and the memory are coupled with each other.
  • the embodiments of the present application provide a computer-readable storage medium, and the computer-readable storage medium stores a computer program or instruction.
  • the computer program or instruction runs on a computer, the computer can execute the operations as described in the first aspect to the first aspect.
  • an embodiment of the present application provides a computer-readable storage medium, and a computer program or instruction is stored in the computer-readable storage medium.
  • the embodiments of the present application provide a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program or instruction.
  • the computer program or instruction When the computer program or instruction is run on a computer, the computer executes operations such as the third aspect to the first aspect.
  • the present application provides a computer program product including instructions that, when the instructions run on a computer, cause the computer to execute the second aspect or a communication method described in various possible implementations of the second aspect.
  • this application provides a computer program product including instructions, which when the instructions run on a computer, cause the computer to execute the second aspect or a communication method described in various possible implementations of the second aspect.
  • an embodiment of the present application provides a communication system, which includes any one or more of the following: the fourth aspect and the communication device described in various possible implementation manners, and the fifth aspect and the fifth aspect Various possible implementations of the aspects described in the communication device.
  • the communication system may further include: the communication device described in the sixth aspect and various possible implementation manners of the sixth aspect.
  • an embodiment of the present application provides a communication device.
  • the communication device includes a processor and a storage medium.
  • the storage medium stores instructions. When the instructions are executed by the processor, the Possible implementations describe a communication method.
  • an embodiment of the present application provides a communication device.
  • the communication device includes a processor and a storage medium.
  • the storage medium stores instructions. Possible implementations describe a communication method.
  • an embodiment of the present application provides a communication device that includes a processor and a storage medium.
  • the storage medium stores instructions.
  • the instructions When executed by the processor, they can implement various aspects such as the third aspect or the third aspect. Possible implementations describe a communication method.
  • the present application provides a chip or chip system.
  • the chip or chip system includes at least one processor and a communication interface.
  • the communication interface and at least one processor are interconnected by wires, and the at least one processor is used to run computer programs or instructions. , To perform a communication method described in any one of the first aspect to any one of the possible implementation manners of the first aspect.
  • the present application provides a chip or chip system.
  • the chip or chip system includes at least one processor and a communication interface.
  • the communication interface and the at least one processor are interconnected by wires, and the at least one processor is used to run computer programs or instructions. , To perform a communication method described in any one of the second aspect to any one of the possible implementation manners of the second aspect.
  • the present application provides a chip or chip system that includes at least one processor and a communication interface.
  • the communication interface and at least one processor are interconnected by wires, and the at least one processor is used to run computer programs or instructions.
  • the at least one processor is used to run computer programs or instructions.
  • the communication interface in the chip can be an input/output interface, a pin, or a circuit.
  • the chip or chip system described above in this application further includes at least one memory, and instructions are stored in the at least one memory.
  • the memory may be a storage unit inside the chip, for example, a register, a cache, etc., or a storage unit of the chip (for example, a read-only memory, a random access memory, etc.).
  • an embodiment of the present application provides a communication device.
  • the communication device includes a processor, the processor is coupled to a memory, and instructions are stored in the memory, and the processor is used to execute the instructions to implement the second aspect or the second aspect A communication method described in the various possible implementations.
  • the memory described in the twentieth aspect to the twenty-second aspect in the embodiments of the present application may be located inside or outside the communication device, which is not limited in the embodiment of the present application.
  • FIG. 1 is an architecture diagram of a communication system provided by an embodiment of this application.
  • FIG. 2 is a diagram of a 5G network architecture provided by an embodiment of this application.
  • FIG. 3 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • 4 to 13 are schematic diagrams of related interaction processes of a communication method provided by embodiments of this application.
  • FIG. 14 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • 15 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • words such as “first” and “second” are used to distinguish the same items or similar items that have substantially the same function and effect.
  • the first message and the second message are only for distinguishing different messages, and the sequence of the messages is not limited.
  • words such as “first” and “second” do not limit the quantity and order of execution, and words such as "first” and “second” do not limit the difference.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an “or” relationship.
  • the following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • LTE long time evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • PLMN public land mobile network
  • D2D device-to-device
  • M2M machine to machine
  • NR new radio
  • the second interface may be referred to as a direct communication interface.
  • the direct communication interface is a PC5 interface, which uses a dedicated frequency band (such as 5.9 GHz) for the Internet of Vehicles.
  • the direct communication interface is an interface used for communication between the terminal and the terminal.
  • the terminal 20 sends data b to the terminal 30 through the direct communication interface.
  • the difference between direct communication interface communication and Uu interface communication is that the direct communication interface communication does not require the participation of the network (data b does not pass through the base station).
  • Direct communication interfaces are generally used in vehicle-to-everything (V2X) communication scenarios, or device-to-device (D2D) scenarios where direct communication between devices can be performed.
  • V2X vehicle-to-everything
  • D2D device-to-device
  • the names of the first interface and the second interface in the embodiments of the present application are only examples, and the embodiments of the present application do not limit the names of the first interface and the second interface.
  • the access network device 10 may also be referred to as a base station, which is an entity that can be used to transmit or receive signals in cooperation with a terminal. It is mainly used to realize functions such as physical layer functions, resource scheduling and management, terminal access control, and mobility management.
  • the access network device can be a device that supports wired access or a device that supports wireless access.
  • the access network equipment may be an access network (access network, AN)/radio access network (radio access network, RAN), which is composed of multiple 5G-AN/5G-RAN nodes.
  • the access network device 10 in the embodiment of the present application may configure the direct communication interface resources for the terminal 20, and notify the terminal 20 to enter the RRC-inactive state, or notify the terminal 20 to enter the RRC-active state and adopt the power saving mode.
  • the processor 31 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the execution of the program of this application. integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the memory 32 is used to store computer execution instructions for executing the solution of the present application, and the processor 31 controls the execution.
  • the processor 31 is configured to execute computer-executable instructions stored in the memory 32, so as to implement a communication method provided in the following embodiments of the present application.
  • the computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.
  • the direct communication interface resource can also be shared by the data of the first application and the data of other applications, that is, the direct communication interface resource is a common resource, that is, the terminal can not only transmit the first application on the direct communication interface resource
  • the data can also transmit data from other applications.
  • the directly connected communication interface resources allocated by the access network device in the embodiment of the present application to the terminal are wireless resources used for data transmission on the directly connected communication interface, such as specific time slots and specific frequency resources.
  • the aforementioned direct communication interface resources may be used as periodic resources configured by the access network equipment for the terminal in a semi-static manner.
  • the aforementioned direct communication interface resource may be a semi-persistent scheduling (Semi-Persistent Scheduling, SPS) resource allocated by the access network device on the direct communication interface for the terminal.
  • SPS semi-persistent Scheduling
  • the semi-continuously scheduled direct communication interface resource allocated by the access network device to the terminal enables the terminal to periodically use the direct communication interface resource to send data on the direct communication interface. There is no need to send a request to the access network device before each communication to obtain the directly connected communication interface resource.
  • the terminal When the terminal has new data that needs to be sent, the terminal needs to request the access network device again for direct connection communication interface resources.
  • Semi-static configuration means that after the terminal requests the direct connection communication interface resource from the access network device, the access network device authorizes the terminal to use a certain resource periodically, for example, taking 100 milliseconds as an interval. The terminal only needs to periodically use the authorized direct communication interface resource to send data, and does not need to request the direct communication interface resource from the access network device every time.
  • the access network device may be the access network device 10 in FIG. 1, and the terminal may be the terminal 20 in FIG. 1.
  • the terminal is in a radio resource control RRC-inactive state.
  • the terminal is in the RRC-active state and the terminal adopts the power saving mode.
  • the terminal can still transmit data through the direct communication interface resources.
  • the direct communication interface resources in the embodiments of the present application can only be used when the terminal is in the radio resource control RRC-inactive state, or used when the terminal is in the RRC-active state and adopts the power saving mode.
  • the The direct communication interface resource is specifically configured for the terminal, and is used for the terminal to transmit data in the radio resource control RRC-inactive state, or for the terminal to transmit data in the RRC-active state, and the terminal adopts the power saving mode to transmit data.
  • the direct communication interface resource can not only transmit data when the terminal is in the radio resource control RRC-inactive state, or when the terminal is in the RRC-active state and the terminal adopts the power saving mode, the direct communication interface resource can also be The terminal transmits data when it is in the RRC-active state. For example, when the terminal is in the RRC-active state, regardless of whether the terminal adopts the power saving mode, the terminal can use the direct communication interface resource to transmit data that needs to be transmitted on the direct communication interface.
  • the terminal if the terminal maintains a Uu interface connection with the access network device or the terminal maintains an RRC connection with the access network device, the terminal is in the RRC-activated state.
  • the access network device can configure direct communication interface resources for the terminal. If the terminal and the access network device do not maintain the Uu interface connection or the RRC connection between the terminal and the access network device is released, the terminal is in the RRC-inactive state.
  • the power consumption generated by the power saving mode when the terminal is in the RRC-active state is lower than the power consumption when the terminal is not used in the power saving mode when the terminal is in the RRC-active state.
  • the terminal can enter the RRC-inactive state from the RRC-active state under the configuration of the access network device, or the terminal can change from the RRC-active state to the normal state under the configuration of the access network device.
  • the mode (for example, the non-power saving mode) enters the power saving mode of the RRC-active state, which is not limited in the embodiment of the present application.
  • the embodiment of the present application provides a communication method in which a terminal receives resource information from an access network device. Since the resource information is used to characterize the resources of a directly connected communication interface, then when the terminal is in a radio resource control RRC-inactive state , Or when the terminal is in the RRC-activated state and the terminal adopts the power saving mode, data can be transmitted on the direct communication interface resource. In this way, for the terminal in the RRC-inactive state, it is possible to avoid the power consumption caused by the terminal adopting the terminal independent selection resource mode to obtain the direct connection communication interface resource in order to transmit data.
  • the access network device receives the preferred scheduling mode from the terminal accessing the management network element.
  • the access management network element may determine the preferred scheduling mode of the terminal from the subscription information of the terminal, or the access management network element may determine the preferred scheduling mode of the terminal based on the request of the terminal. Or the access management network element can independently determine the preferred scheduling mode of the terminal on the directly connected communication interface. It is understandable that the preferred scheduling mode of the terminal in the embodiment of the present application may refer to the preferred scheduling mode of the terminal on the directly connected communication interface.
  • the preferred scheduling mode of the terminal may be a network scheduling mode.
  • the access network device sends resource information to the terminal according to the preferred scheduling mode of the terminal, including: the access network device allocates direct communication interface resources to the terminal in the scheduling mode indicated by the priority scheduling mode, and then connects The network access device sends resource information used to characterize the resources of the directly connected communication interface to the terminal.
  • the preferred scheduling mode is the preferred scheduling mode corresponding to the first application.
  • the preferred scheduling mode is the preferred scheduling mode of the first application of the terminal on the directly connected communication interface. It should be understood that for the same terminal, different applications may have different corresponding preferred scheduling modes on the direct communication interface.
  • the terminal when the terminal receives the second notification message, the terminal is in the RRC-activated state, in other words, there is an RRC connection between the terminal and the access network device, and the configured DRX parameters enable the terminal to obtain the effect of saving power.
  • the above method may further include: within a preset time, if there is no data transmission on the Uu interface between the terminal and the access network device, the access network device The terminal sends the second notification message, and correspondingly, the terminal receives the second notification message from the access network device.
  • the foregoing method may further include: the terminal determining that the terminal can use the foregoing direct communication interface resource based on the network scheduling mode configured by the access network device for the terminal to transmit data.
  • the terminal may determine, according to predefined or pre-configured information, that the terminal can use the aforementioned direct communication interface resource based on the network scheduling mode configured by the access network device for the terminal to transmit data.
  • the terminal may determine that the terminal can use the direct communication interface resource based on the network scheduling mode configured by the access network device for the terminal to transmit data according to the instruction of the access management network element or the access network device.
  • the terminal can determine that the terminal can use the direct communication interface resource based on the network scheduling mode configured by the access network device for the terminal to transmit the data of the first application when the terminal is in the RRC-inactive state.
  • the terminal can determine that the terminal can use the above-mentioned network scheduling mode-based direct communication interface resources configured by the access network device for the terminal to transmit the first application when the terminal is in the RRC-active state and in the power saving mode The data.
  • FIG. 5 shows another embodiment of the present application.
  • This embodiment includes steps 501 to 512, where step 507 can refer to the above step 401, which will not be repeated here.
  • Step 509 is a possibility of the above step 402 The way to achieve.
  • steps 501 to 506, step 508, step 510, step 511, and step 512 are optional steps.
  • Step 501 The terminal sends an identifier of at least one service to the access management network element.
  • the access management network element receives the identification of at least one service from the terminal.
  • the identifier of at least one service is the service requested by the terminal.
  • the at least one service may be a service transmitted through a direct communication interface, for example, a V2X service.
  • the at least one service is used to indicate the service that the terminal requests to be transmitted through the direct communication interface, and the at least one service includes the first application.
  • the direct communication interface may be a PC5 interface.
  • the data of at least one service in the embodiment of the present application can be transmitted on the direct communication interface resource acquired by the terminal in the network scheduling mode.
  • the data of at least one service can also be transmitted on the access network device based on network scheduling.
  • the mode is transmission on the direct connection communication interface resource configured by the terminal.
  • the at least one service is a service for the terminal to request data transmission.
  • step 501 in the embodiment of the present application may be implemented in the following manner: the terminal sends a first message to the access management network element, and correspondingly, the access management network element receives the first message from the terminal.
  • the first message carries the identifier of at least one service.
  • the first message may be a packet data unit (packet data unit, PDU) session (session) connection establishment (PDU) session establishment message or a service request (service request) message.
  • the access management network element may be an AMF network element.
  • the first message may also carry indication information used to indicate that the at least one service is a service requested by the terminal.
  • the terminal receives the identifier of the permitted service from the terminal that accesses the management network element.
  • the permitted service is a service in which the access management network element authorizes the terminal to transmit data on the directly connected communication interface, and the permitted service includes the first application, in other words, the first application belongs to the permitted service of the terminal.
  • step 502 may be implemented in the following manner: access to the management network element to obtain the subscription information of the terminal.
  • the access management network element sends the terminal's allowed service identification to the terminal according to the subscription information.
  • the access management network element sending the identifier of the permitted service of the terminal to the terminal according to the subscription information includes: the access management network element obtains the identifier of the permitted service of the terminal from the subscription information of the terminal. The access management network element sends the identification of the allowed service of the terminal to the terminal.
  • the access management network element can determine the identifier of the permitted service in the following manner: the access management network element obtains the identifier of the permitted service of the terminal from the contract information of the terminal. For example, the access management network element may obtain the subscription information of the terminal from the UDR network element or the UDM network element, and the subscription information includes the identifier of the allowed service of the terminal.
  • the access management network element determining the permitted service can be implemented in the following manner: the access management network element determines the permitted service of the terminal from at least one service.
  • the permitted services of the terminal in the embodiment of the present application may be all or part of at least one of the services.
  • at least one business is business 1, business 2, and business 3, and the permitted business can be business 1 and business 2. Therefore, the first application may be one or more of Service 1 and Service 2.
  • the first application in the embodiment of the present application may represent all services in the permitted services, or represent part of the services in the permitted services, for example, a service, which is not limited in the embodiments of the present application.
  • the data of the permitted service in the embodiment of the present application may be transmitted on the direct communication interface resource acquired by the terminal in the network scheduling mode.
  • the data of the permitted service can be transmitted on the direct connection communication interface resource acquired by the terminal in the terminal autonomous selection mode.
  • step 501 can be omitted, that is, step 501 is an optional step.
  • the access management network element can send the identification of the allowed service to the terminal .
  • the data of the PC5 service includes the data of the permitted service.
  • the access management network element in the embodiment of the present application may also decide whether to send the identifier of the allowed service to the terminal at the request of the terminal.
  • step 501 needs to be included before step 502. Specifically, if the access management network element allows the terminal to use the directly connected communication interface resources acquired in the network scheduling mode to transmit data of the allowed service, the access management network element sends the identification of the allowed service to the terminal. If the access management network element does not allow the terminal to use the directly connected communication interface resources acquired in the network scheduling mode to transmit data of the allowed service, the access management network element does not send the identification of the allowed service to the terminal.
  • the identifier of the permitted service sent by the access management network element to the terminal is the identifier of the service that the access management network element allows the terminal to use the direct communication interface resource acquired in the network scheduling mode to transmit data.
  • the identifier of the permitted service sent by the access management network element to the terminal may be the identifier of all the services or the identifiers of part of the services among the identifiers of at least one service requested by the terminal, which is not limited in the embodiment of the present application.
  • the terminal requests to use the network scheduling mode to transmit service 1 data and service 2 data.
  • the access management network element can allow the terminal to use the network scheduling mode to transmit service 1 data and service 2 data.
  • the access management network element sends the service ID and the service 2 ID to the terminal as the ID of the allowed service.
  • the access management network element allows the terminal to use the network scheduling mode to transmit the data of the service 1, the access management network element sends the identifier of the service 1 to the terminal as the identifier of the allowed service.
  • the identity of the allowed service can be determined by the access management network element according to the terminal's subscription information and the identity of at least one service from the terminal, or the access management network element can be determined based on the terminal's subscription information And the ability of the terminal is determined.
  • the identifier of the permitted service is the intersection of the identifier of the service in the subscription information and the identifier of at least one service.
  • step 502 in the embodiment of the present application may be implemented in the following manner: the access management network element sends a sixth message to the terminal.
  • the terminal receives the sixth message from the access management network element.
  • the sixth message includes the identifier of the allowed service.
  • the sixth message is used to indicate that the terminal is allowed to use the direct communication interface resource acquired in the network scheduling mode to transmit the data of the allowed service.
  • the sixth message may also carry indication information x, which is used to indicate that the terminal is allowed to use the direct communication interface resource acquired in the network scheduling mode to transmit the data of the allowed service.
  • the sixth message may be a service acceptance message.
  • Step 503 The terminal sends a first message to the access management network element.
  • the first message contains a first parameter
  • the first parameter is used to characterize the terminal request to use the network scheduling mode to transmit data on the direct communication interface, or the first parameter is used to characterize the terminal request to use the network on the direct communication interface
  • the scheduling mode transmits data of at least one service.
  • the access management network element determines whether the terminal can transmit data on the direct communication interface using the direct communication interface resource acquired in the network scheduling mode according to the first parameter and the contract information of the terminal.
  • the subscription information of the terminal includes not only the identification of the allowed service of the terminal, but also information indicating whether the terminal is allowed to use the direct communication interface resource acquired in the network scheduling mode to transmit data.
  • the access management network element sends authorization information to the terminal.
  • the authorization information is used to indicate that the terminal is allowed to be in the direct connection
  • the direct connection communication interface resource obtained by the network scheduling mode is used to transmit data on the connection communication interface.
  • the access management network element does not send authorization information to the terminal.
  • the access management network element sends prohibition indication information to the terminal, where the prohibition indication information is used to indicate that the terminal is forbidden to use the direct communication interface resource acquired in the network scheduling mode to transmit data on the direct communication interface. If the terminal does not receive the authorization information, or the terminal receives the prohibition indication information, the terminal will not subsequently transmit data on the direct communication interface using the direct communication interface resources acquired through the network scheduling mode.
  • the data in the "terminal request to use the network scheduling mode to transmit data on the direct communication interface” can refer to "general data", that is, the data can be not only PC5 service data, but also PC5 service data. Other data.
  • the data in “the terminal requests to use the network scheduling mode to transmit data on the direct communication interface” can refer to "specified data”.
  • the specified data may be PC5 service data.
  • the specified data may also be data of other services, for example, direct communication is used to send text messages, audio or video data.
  • the data may belong to the data of permitted services, which is not limited in the embodiment of the present application.
  • the data in the "terminal request to use the network scheduling mode to transmit data on the PC5 interface” can refer to the "specified data”
  • the terminal will not subsequently use the direct communication interface resource acquired in the network scheduling mode to transmit the "specified data” on the direct communication interface, but the terminal can use the direct communication interface resource acquired in the network scheduling mode to communicate in the direct connection.
  • Data other than "specified data” is transmitted on the interface.
  • the first message may be a service request message.
  • the identifier of at least one service is carried in the first message. It should be understood that if the first parameter and the identifier of the at least one service can be carried in the same message, the first message may be used to indicate that the terminal requests to use the network scheduling mode to transmit data of at least one service on the direct communication interface.
  • this step 503 may be before step 501, that is, the terminal requests the access management network element to use the network scheduling mode to transmit on the direct communication interface
  • the terminal sends at least one service identifier to the access management network element.
  • this step 503 may be located after step 501, that is, the terminal first sends the identification of at least one service to the access management network element. After obtaining the identification of the authorized service authorized by the access management network element, the terminal sends the The access management network element requests to use the network scheduling mode to transmit data on the directly connected communication interface.
  • the first message further includes the first link identifier.
  • the first link identifier indicates a communication link used for the terminal to transmit data on the directly connected communication interface, or the first link identifier indicates a communication link used for the terminal to transmit data of the first application on the directly connected communication interface .
  • the first link identifier may be a source address and a destination address.
  • the source address is the layer 2 address of the terminal
  • the destination address is the layer 2 address of the receiver that receives the data of the first application (for example, the layer 2 address of the other terminal described above).
  • the access management network element uses the first link identifier to manage the first link (for example, the communication link through which the terminal transmits data on the directly connected communication interface).
  • the access management network element may use the first link identifier to instruct the terminal to stop sending data on the first link, or instruct the access network device to stop allocating direct communication interface resources for the first link, or access management
  • the network element indicates that the direct communication interface resource configured by the access network device for the terminal is for the first link.
  • the terminal can transmit the direct communication interface resource configured for the terminal by the access network device for the first link. data.
  • Step 504 The terminal sends a second message to the access management network element.
  • the access management network element receives the second message from the terminal.
  • the second message includes a first quality of service parameter
  • the first quality of service parameter is a quality of service parameter used by the terminal to request data transmission on the directly connected communication interface.
  • the first quality of service parameter is the quality of service parameter of the directly connected communication interface that has not been authorized by the network side.
  • the third message includes the authorized service quality parameter, and the authorized service quality parameter is used for the terminal to transmit data on the directly connected communication interface.
  • the authorized service quality parameter is the service quality parameter of the terminal authorized by the network side to transmit data on the directly connected communication interface.
  • the method provided in this embodiment of the present application may further include: the terminal determines that when the terminal is in the RRC-inactive state, it can use the direct communication interface resources configured by the access network device for the terminal Transmit data on the directly connected communication interface, or the terminal determines that when the terminal is in the RRC-active state and in the power saving mode, the terminal can use the direct communication interface resources configured by the access network device for the terminal to transmit data on the directly connected communication interface .
  • the so-called terminal being able to use the direct connection communication interface resources configured by the access network equipment for the terminal to transmit data on the direct connection communication interface is equivalent to the terminal determining that it can use the network scheduling mode to transmit data on the direct connection communication interface.
  • the access network device uses an implicit way to indicate that when the terminal is in the RRC-inactive state, the terminal can use the direct communication interface resources configured by the access network device for the terminal to transmit data on the direct communication interface, or connect
  • the network access device uses an implicit way to indicate that when the terminal is in the RRC-active state and in the power saving mode, the terminal can use the direct communication interface resources configured by the access network device for the terminal to transmit data on the direct communication interface.
  • the direct communication interface resources configured by the access network equipment for the terminal are resources in a specific location, and the resources in the specific location can be used when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and is in the province.
  • the data of the first application is transmitted on the direct communication interface, or the data is transmitted on the direct communication interface.
  • the terminal determines that the resource configured by the access network device for the terminal is a resource in a specific location, it can use the access when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and in the power saving mode.
  • the network equipment transmits data for the directly connected communication interface resources configured for the terminal.
  • the access network device uses an explicit way to indicate that when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and in the power saving mode, the terminal can use the direct connection configured by the access network device for the terminal.
  • the communication interface resource transmits data.
  • the access network device executes step 507. This is convenient for the terminal to determine according to the first indication information that when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and in the power saving mode, the terminal can use the direct communication interface resources configured by the access network device for the terminal to transmit data .
  • Step 507 The access network device sends resource information to the terminal.
  • the terminal receives resource information from the access network device.
  • step 507 For the description of step 507, reference may be made to the description of step 401, which will not be repeated here.
  • the terminal requests the access network device to configure the direct connection communication interface resource for the terminal and also carries the first link identifier
  • the direct connection communication interface resource configured by the access network device for the terminal may also be connected to the first link. Identify the association.
  • the so-called association of the directly connected communication interface resource with the first link identifier may indicate that the destination of the data to be transmitted by the directly connected communication interface resource is the destination of the communication link indicated by the first link identifier.
  • Step 508 The access network device or the access management network element sends the first indication information to the terminal.
  • the terminal receives the first indication information from the access network device or the access management network element.
  • the first indication information is used to indicate that the terminal is allowed to use the direct communication interface resource based on the network scheduling mode to transmit the data of the first application when the terminal is in the RRC-inactive state.
  • the first indication information is used to indicate that when the terminal is allowed to be in the RRC-activated state and in the power saving mode, the direct communication interface resource based on the network scheduling mode is used to transmit the data of the first application.
  • the terminal determines that when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and in the power saving mode, it can use the direct communication interface resource based on the network scheduling mode to transmit the first application on the direct communication interface
  • the data includes: the terminal determines according to the first indication information that when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and is in the power saving mode, the direct connection based on the network scheduling mode can be used on the direct connection communication interface
  • the communication interface resource transmits the data of the first application.
  • step 402 in the embodiment of the present application can be implemented in the following manner: when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and in the power saving mode
  • the terminal transmits the data of the first application on the direct communication interface resource according to the first indication information it includes: the terminal determines according to the first indication information when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and When the data of the first application is transmitted on the direct communication interface when in the power saving mode, the terminal uses the resources of the direct communication interface to transmit the data of the first application.
  • the method provided in the embodiment of the present application may further include: the terminal receives permission indication information from the access management network element, where the permission indication information is used to indicate that the terminal is allowed to transmit data on the directly connected communication interface Through the permission indication information, it is convenient for subsequent terminals to transmit data on the directly connected communication interface.
  • the method provided in the embodiment of this application may further include before step 508 :
  • the terminal generates a PC5 interface quality of service flow (PC5 QoS Flow) corresponding to the first application.
  • the PC5 interface quality of service flow includes a PC5 interface packet filter.
  • a parameter value in the PC5 interface packet filter is the identifier of the first application.
  • the terminal associates the data of the first application with the PC5 interface quality of service flow.
  • the PC5 interface packet filter is used to determine the data of the first application.
  • the terminal determines the data of the first application according to the PC5 interface packet filter, including: the terminal obtains one or more data to be sent, and the terminal associates the application identifier corresponding to the one or more data to be sent with the PC5
  • the identification of the first application in the interface packet filter is compared, and if the application identification corresponding to the target data in one or more to-be-sent data is the same as the identification of the first application, the terminal determines that the target data is the identification of the first application data.
  • the so-called terminal associating the data of the first application with the PC5 interface quality of service flow may refer to: the terminal uses the PC5 interface quality of service flow to transmit the data of the first application on the resources configured by the access network device for the terminal.
  • the terminal receives the PC5 interface quality of service flow or configuration information corresponding to the first application from the policy control network element.
  • the configuration information is used to generate the PC5 interface quality of service flow corresponding to the first application.
  • the terminal generates the PC5 interface quality of service flow corresponding to the first application according to the configuration information.
  • the parameter of the PC5 interface quality of service flow may be the PC5 interface quality of service flow identifier (PFI, PC5 QoS Flow Identifier).
  • the policy control network element may be a PCF network element, and the PC5 interface quality of service flow or configuration information corresponding to the first application may be actively sent by the policy control network element to the terminal.
  • the policy control network element may also send configuration information or the quality of service flow of the PC5 interface corresponding to the first application to the terminal at the request of the terminal.
  • the priority of the PC5 interface quality of service flow or configuration information corresponding to the first application from the policy control network element is higher than the priority of the PC5 interface quality of service flow corresponding to the first application pre-configured at the terminal.
  • Manner 2 The terminal generates the PC5 interface quality of service flow corresponding to the first application according to the pre-configured parameters.
  • the terminal is configured in advance with the PC5 service quality parameters that can be used by the first application in the SIM card or the built-in storage of the terminal.
  • the terminal generates the corresponding PC5 interface quality of service flow through the preset PC5 interface quality of service parameters, and writes the identification of the first application into the PC5 interface packet filter of the PC5 interface quality of service flow.
  • Step 510 The terminal sends a fourth message to the access management network element.
  • the fourth message includes a second parameter
  • the second parameter is used to characterize that the terminal stops transmitting data on the directly connected communication interface.
  • the second parameter is used to characterize that the terminal has completed the data transmission of the first application.
  • the second parameter is used to characterize that the terminal wishes to stop transmitting data on the directly connected communication interface.
  • the second parameter is used to characterize that the terminal wishes to stop transmitting the data of the first application on the directly connected communication interface.
  • the access management network element sends release instruction information to the access network device, where the release instruction information is used to instruct the access network device to release the direct communication interface resources of the terminal.
  • the release indication information is used to instruct the terminal to stop using the direct communication interface resource to transmit the data of the first application on the direct communication interface, or the first indication information is used to indicate that the terminal has completed the data transmission of the first application.
  • Step 512 When the terminal stops transmitting data through the direct communication interface resource, the access network device releases the direct communication interface resource.
  • step 512 may be implemented in the following manner: the access network device releases the aforementioned direct communication interface resources according to the release instruction information.
  • step 512 can be replaced in the following manner: the terminal has completed the data transmission of the first application, or the access network device needs to release the direct communication interface resource configured for the terminal, then the access network device releases the direct communication interface resource.
  • the access network device receives instruction information from the access management network element, where the instruction information is used to indicate that the terminal has completed the data transmission of the first application.
  • the need for the access network device to release the direct communication interface resources configured for the terminal includes: the access network device determines that it needs to release the direct communication interface resources configured for the terminal according to the instruction information from the access management network element.
  • the access network device may also send a third notification message to the terminal, where the third notification message is used for It indicates that the direct communication interface resource configured for the terminal is released, so that it is convenient for the terminal to determine that the direct communication interface resource is released according to the third notification message.
  • the method provided in the embodiment of the present application may further include: the terminal sends a third parameter to the access management network element, and correspondingly, the access management network element receives the third parameter from the terminal.
  • the third parameter is used to characterize that the terminal requests to use the network scheduling mode on the direct communication interface.
  • the third parameter facilitates the access management network element to determine that the resource scheduling mode for the terminal to transmit data on the directly connected communication interface is the network scheduling mode.
  • the method provided in the embodiment of the present application may further include: the terminal receives second indication information, the second indication information is used to indicate that the terminal is allowed to be in the RRC-activated state and use the power saving mode based on
  • the direct connection communication interface resource of the network scheduling mode transmits data.
  • the terminal transmitting data through the direct connection communication interface resource includes: the terminal transmits the above data through the direct connection communication interface resource according to the second instruction information.
  • the terminal transmits the above-mentioned data through the direct communication interface resource according to the second indication information, including: the terminal determines according to the second indication information that the access management network element allows the terminal to be in the RRC-active state and adopts the power saving mode
  • the direct connection communication interface resource based on the network scheduling mode is used to transmit data, and then the terminal transmits the above-mentioned data through the direct connection communication interface resource.
  • the access management network element can instruct the connection The network access device releases all directly connected communication interface resources for the terminal. If the second parameter is used to characterize that the terminal wishes to stop transmitting data of the first application on the direct communication interface or the second parameter is used to characterize that the terminal stops transmitting data of the first application on the direct communication interface, then access the management network element The access network device may be instructed to release the direct connection communication interface resource configured for the first application, but other data transmission on the direct connection communication interface does not stop.
  • Figure 6 takes the terminal as the UE, the access network equipment as the (R)AN equipment, the access management network element as the AMF network element, and the direct communication interface as the PC5 interface as an example.
  • a communication method which includes:
  • Step 601 The UE sends a registration request (registration request) message to the AMF network element through the (R)AN device.
  • the AMF network element receives the registration request message from the UE.
  • the registration request message may carry a first mode indicator (indicator).
  • the registration request message is used to request registration of the UE to the core network.
  • the first mode indication is used to indicate that the UE requests to transmit PC5 service data in the network scheduling mode on the PC5 interface, or the first mode indication is used to indicate that the UE has the ability to transmit PC5 service data on the PC5 interface.
  • the PC5 service may be a VRU service, and the PC5 service may also be another service that uses a PC5 interface for communication, such as a service for direct communication between terminals.
  • the registration request message may also carry the identity of the UE.
  • the UE may perform other steps in the registration procedure with other network elements in the core network.
  • Step 602 The AMF network element sends a registration request message to the UDM network element.
  • the UDM network element receives the registration request message from the AMF network element.
  • Step 603 The UDM network element sends a registration response (registration response) message to the AMF network element.
  • the AMF network element receives the registration response message from the UDM network element.
  • the registration response message may carry the subscription information of the UE, where the subscription information of the UE includes one or more of the following information: first capability (capability) information, and authorization indication information.
  • first capability information indicates that the UE has the capability of transmitting PC5 service data on the PC5 interface.
  • authorization indication information is used to indicate that the UE is allowed to use the direct communication interface resources obtained in the network scheduling mode to transmit data of the PC5 service on the PC5 interface.
  • Step 604 The AMF network element selects a PCF network element that provides services for the UE.
  • Step 605 The AMF network element and the PCF network element execute an access and mobility policy (Access and Mobility Policy, AM Policy) policy connection establishment/modification (association Establishment/Modification) process.
  • Access and Mobility Policy Access and Mobility Policy, AM Policy
  • association Establishment/Modification association Establishment/Modification
  • step 605 the UE and other network elements in the core network perform other steps in the registration procedure.
  • Step 606 The AMF network element sends a registration accept message to the UE.
  • the UE receives the registration accept message from the AMF network element.
  • the registration acceptance message includes authorization instruction information.
  • Step 702 The UE sends a service request message (service request message) to the AMF network element through the (R)AN device.
  • the AMF network element receives the service request message from the terminal through the (R)AN device.
  • the PC5 service request is used to indicate that the UE requests to transmit PC5 service data on the PC5 interface.
  • the service request message does not carry the list of PDU Session, which is used to indicate that the purpose of the terminal sending the service request message is not because there is data to be sent on the Uu.
  • the requested PC5 QoS parameters can include one or more of the following parameters:
  • the resource type can be: guaranteed bit rate (guaranteed bit rate, GBR), delay critical GBR (delay critical GBR) or non-guaranteed bit rate (Non-GBR);
  • the AM policy request message carries the identifier of at least one service and the requested PC5 QoS parameters1.
  • the preferred scheduling mode indicates that the PC5 interface quality of service stream corresponding to the permitted service needs to be transmitted in a low power consumption manner.
  • the N2 message includes authorized PC5 QoS parameters 2, the preferred scheduling mode, the identifier of the allowed service, and the service accept message.
  • the service accept message includes the identifier of the allowed service.
  • the authorized PC5 QoS parameters 2 includes the identifier of the allowed service and the preferred scheduling mode.
  • the preferred scheduling mode is the network scheduling mode.
  • the identifier of the allowed service is the identifier of the service that authorizes the UE to transmit data on the PC5 interface.
  • the permitted business belongs to all or part of at least one business. authorized PC5 QoS parameters 2, the preferred scheduling mode, and the identifier of the allowed service can be carried in the context of the UE.
  • the AMF network element may also send a mode indication 1 (corresponding to fourth indication information) to the (R)AN device.
  • the mode indication 1 is used to indicate when the (R)AN device and the UE are on the air interface (for example, Uu interface).
  • the (R)AN device maintains the Uu interface connection with the UE (that is, the (R)AN device maintains an RRC connection between the UE and the UE), and the UE needs to use the power saving mode to maintain the Uu interface with the (R)AN device connect.
  • Step 706 The (R)AN device sends RRC connection reconfiguration (connection reconfiguration) information to the UE.
  • the RRC connection reconfiguration information includes the configuration of the side link radio bearer (SL RB) and the service acceptance message.
  • the service acceptance message includes the identifier of the allowed service and authorized PC5 QoS parameters 2.
  • the configuration of the side link radio bearer (SL RB) is used to configure the radio bearer for the UE to transmit data of the allowed service on the PC5 interface.
  • the RRC connection reconfiguration information may be actively sent by the (R)AN device to the UE, or the (R)AN device may send the RRC connection reconfiguration information to the UE based on the request of the UE. For example, if the (R)AN device obtains the N2 message from the AMF network element, it will actively send the RRC connection reconfiguration information to the UE.
  • step 706 in the embodiment of this application is that the UE receives the identifier of the allowed service from the AMF network element and authorized PC5 QoS parameters 2 through the (R)AN device.
  • Step 707 The PCF network element updates the UE's policy.
  • the PC5 interface quality of service flow may include a PC5 interface filter, and the PC5 interface filter is used to determine the data of allowed services.
  • the PC5 interface filter may include the identifier of the allowed service. Taking the permitted service including application 1 as an example, the PC5 interface filter may include the identification of application 1.
  • the UE receives the updated UE policy from the PCF network element.
  • the PCF network element may actively send the updated UE policy to the UE.
  • the PCF network element may send the updated UE policy to the UE based on the request of the UE.
  • the PCF network element receives a UE policy update (UE policy update) request message from the UE.
  • the UE policy update request message is used to request the UE's policy.
  • the PCF network element sends a UE policy update response message to the UE according to the UE policy update request message.
  • the UE policy update response message includes the updated UE policy.
  • Step 709 The UE requests the (R)AN device for direct communication interface resources for transmitting data of application 1 on the PC5 interface.
  • step 709 can be replaced by the following method: the UE requests the (R)AN device to transmit application 1 on the PC5 interface according to the application 1 identification, source layer 2 identification, and destination layer 2 identification. Data direct communication interface resources. The UE provides the source layer 2 identification and the destination layer 2 identification to the (R)AN device so that the (R)AN device can determine the address of the sender of the application 1 data and the address of the recipient of the application 1 data.
  • Step 710 The (R)AN device allocates SPS resources to the UE according to the preferred scheduling mode.
  • step 711 in the embodiment of this application can be implemented in the following way: the UE determines the data of application 1 according to the PC5 interface packet filter, and then the UE uses the above-mentioned data on the PC5 interface communication link.
  • the direct communication interface resource sends application 1 data.
  • the UE determining the data of application 1 according to the PC5 interface packet filter can be achieved in the following way: the UE determines that the identifier of the application corresponding to the data to be sent is the same as the identifier of the application 1 carried in the PC5 interface packet filter. Then the UE determines that the data to be sent is application 1 data.
  • the priority of the PC5 interface packet filter provided by the PCF network element for the UE is higher than the other PC5 interface packet filters in the UE.
  • the PC5 interface packet filter in step 711 may be, on the one hand, other PC5 interface packet filters in the UE, or it may be a PC5 interface packet filter provided by the PCF network element for the UE.
  • the PC5 interface packet filter in step 711 is the PC5 interface packet filter provided by the PCF network element for the UE.
  • the (R)AN device configures the UE on the air interface according to the mode indication 1 (for example, Uu interface)
  • the mode indication 1 for example, Uu interface
  • the UE maintains the RRC-Connected state on the Uu interface and needs to use power-saving technologies, such as Long DRX.
  • the (R)AN device can indicate to the UE, and the UE can continue to use the above resource transmission configured by the (R)AN device for the UE. Apply the data of 1.
  • the content measured by the terminal in the RRC connected state is more than the content measured by the terminal in the idle state, and the terminal in the RRC connected state actually consumes more power than the terminal in the idle state.
  • the UE if there is no data transmission on the Uu interface between the UE and the (R)AN device, the UE also needs to perform data transmission on the PC5 interface. In this case: Although the UE can keep RRC connection with the (R)AN device, but the UE needs to adopt a power saving mode. At this time, the UE can continue to use the direct communication interface resources configured by the (R)AN device for the UE to send data of allowed services to reduce UE power consumption. On the other hand, in this solution, when data transmission between the UE and the (R)AN device needs to be performed on the Uu interface, the UE does not need to re-establish an RRC connection with the (R)AN device through the random access process to transmit data. . And for downlink transmission, the (R)AN device can also omit the process of re-paging the terminal.
  • the embodiment shown in FIG. 7 describes the process in which the UE obtains authorized PC5 QoSparameters2 and the PC5 interface packet filter in the service request process, and when the UE needs to transmit application 1 data on the PC5 interface, when the UE is on the Uu interface
  • the UE maintains the RRC-Connected state on the Uu interface with the (R)AN device and adopts power-saving technology.
  • the UE can continue to use the (R)AN device as
  • the direct communication interface resource resource configured for the UE based on the network scheduling mode transmits the data of the application 1 on the PC5 interface.
  • FIG. 8 shows another communication method of an embodiment of the present application.
  • the difference between this method and the embodiment shown in FIG. 7 is that the UE is in a packet data unit (PDU) session (session).
  • PDU packet data unit
  • the authorized PC5 QoS parameters2 and PC5 interface packet filter are obtained from the PCF network element.
  • the method includes:
  • Step 801 The UE sends a PDU session establishment request (PDU session establishment request) message to the AMF network element.
  • the AMF network element receives the PDU session establishment request message from the UE.
  • the PDU session establishment request message may include: data network name (data network name, DNN), PC5 service indication, at least one service identifier, and the UE requested quality of service parameters (requested PC5 QoS) for data transmission on the PC5 interface. parameters)1.
  • the service quality parameter 1 includes at least one service identifier.
  • the identification of at least one service included in the service quality parameter 1 indicates that the service quality parameter 1 is a service quality parameter used when transmitting data of at least one service.
  • the indication of the PC5 service is used to indicate that the UE has the ability to transmit the PC5 service on the PC5 interface.
  • Step 803 The AMF network element triggers the PDU session establishment session management context request (Nsmf_PDU session_CreateSMContext request) service operation to the SMF network element.
  • the SMF network element receives the Nsmf_PDU session_CreateSMContext request service operation from the AMF network element.
  • step 803 the UE and other network elements in the core network continue to perform other procedures in the PDU session establishment process.
  • Step 804 The SMF network element sends a session management policy connection modification (SM Policy Association Modification) request message to the PCF network element.
  • SM Policy Association Modification SM Policy Association Modification
  • the PCF network element receives the SM Policy Association Modification request message from the SMF network element.
  • the SM Policy Association Modification request message can carry at least one service identifier and requested PC5 QoS parameters 1.
  • Step 805 The PCF network element sends a session management policy connection modification (SM Policy Association Modification) response message to the SMF network element.
  • SM Policy Association Modification SM Policy Association Modification
  • the SMF network element receives the SM Policy Association Modification response message from the PCF network element.
  • the SM Policy Association Modification response message may include: authorized PC5 QoS parameters2.
  • authorized PC5 QoS parameters2 may include authorized PC5 QoS parameters2.
  • the preferred scheduling mode corresponding to authorized PC5 QoS parameters2 is the network scheduling mode.
  • step 805 the UE and other network elements in the core network continue to perform other procedures in the PDU session establishment process.
  • the N2 container may include authorized PC5 QoS parameters2 and the identification of allowed services.
  • the permitted service is an application in at least one service.
  • Step 807 The AMF network element sends the N2 container to the (R)AN device.
  • Step 808 The AMF network element sends the N1 container to the UE.
  • the UE receives the N1 container from the AMF network element.
  • the UE it is convenient for the UE to know in time the authorized PC5 QoS parameters2 and the PC5 interface packet filter used by the PCF network element to authorize the UE to transmit the data of the allowed service on the PC5 interface.
  • the UE can obtain the identifier of the allowed service authorized by the network side through the PDU session establishment process, and the data for determining the allowed service can use the direct communication interface resource obtained by the UE in the network scheduling mode. transmission.
  • the UE can also obtain the authorized PC5 QoS parameters2 and the PC5 interface packet filter through the PDU session establishment process, so that the authorized PC5 QoS parameters2 and the PC5 interface packet filter can be directly used when the UE needs to transmit the data of the allowed service in the subsequent.
  • Step 901 The UE sends a service request message to the AMF network element through the (R)AN device, and correspondingly, the AMF network element receives the service request message from the UE through the (R)AN device.
  • the service request message includes the identifier of the PDU session, the identifier of at least one service, and the request of the PC5 service.
  • the PC5 service request is used to indicate that the UE requests to transmit PC5 service data on the PC5 interface.
  • Step 903 The SMF network element triggers a PDU session update session management context response (Nsmf_PDUSession_Update SM context response) service operation to the AMF network element, and accordingly, the AMF network element receives a serviced PDU session update session management context response from the SMF network element Service operation.
  • PDU session update session management context response Nsmf_PDUSession_Update SM context response
  • the PDU session update session management context response service operation includes the identifier of the allowed service, the authorized PC5 QoS parameters2, the authorized PC5 QoS parameters2 corresponding preferred scheduling mode, and the second mode indication.
  • the preferred scheduling mode corresponding to authorized PC5 QoS parameters2 is the network scheduling mode.
  • the permitted service may be a service in at least one service.
  • the second mode indication is used to indicate that the (R)AN device can still use the direct communication interface resource acquired in the network scheduling mode to transmit data of the PC5 service when the terminal is in the RRC-inactive state.
  • Step 904 The AMF network element sends the N2 container to the (R)AN device, and the corresponding (R)AN device receives the N2 container from the AMF network element.
  • the N2 container includes authorized PC5 QoS parameters2, authorized PC5 QoS parameters2 corresponding to the preferred scheduling mode and the second mode indication.
  • R second mode indication
  • Step 905 The SMF network element sends the N1 container to the UE, and correspondingly, the UE receives the N1 container from the SMF network element.
  • the N1 container includes the identifier of the allowed service, authorized PC5 QoS parameters2, and the PC5 interface packet filter.
  • the following steps 906 to 911 take the permitted service including application 1 as an example.
  • the subsequent steps 906 to 911 take the UE using the direct communication interface resource to transmit data of the application 1 on the PC5 interface as an example.
  • Step 906 The UE requests the (R)AN device for direct connection communication interface resources for transmitting application 1 data.
  • step 906 to step 911 are optional steps, and step 906 to step 911 can be executed when the UE needs to send data of an allowed service.
  • Step 907 The (R)AN device configures the direct communication interface resource for transmitting application 1 data for the UE based on the preferred scheduling mode of the UE, and correspondingly, the UE receives the data for transmitting application 1 from the (R)AN device Directly connected communication interface resources.
  • Step 908 According to the PC5 interface packet filter, the UE uses the direct communication interface resource configured by the (R)AN device for the UE to send the data of the application 1 on the PC5 interface.
  • Step 909 The (R)AN device sends a first notification message to the UE according to the second mode indication, and correspondingly, the UE receives the first notification message from the (R)AN device.
  • the first notification message is used to instruct the UE to enter the RRC-inactive state from the RRC-active state.
  • step 909 it further includes: the (R)AN device determines that there is no data transmission on the Uu interface between the (R)AN device and the UE.
  • Step 910 The (R)AN device sends first indication information to the UE, where the first indication information is used to indicate that when the UE enters the RRC-inactive state, the UE is allowed to continue to use the aforementioned direct communication configured by the (R)AN device for the UE.
  • the interface resource sends application 1 data on the PC5 interface.
  • Step 911 According to the first indication information, the UE continues to use the direct communication interface resources configured by the (R)AN device for the UE to send application 1 data on the PC5 interface when the UE enters the RRC-inactive state.
  • the service request message (Service Request message) in the embodiments shown in FIG. 7 and FIG. 8 and FIG. 9 corresponds to the first message in the foregoing embodiment.
  • the identification of application 1 corresponds to the identification of the first application in the foregoing embodiment, and the QoS parameter (requested PC5 QoS parameters) 1 for which the terminal requests to transmit data on the PC5 interface corresponds to the first quality of service parameter in the foregoing embodiment.
  • the source layer 2 identifier (source L2 ID) and the destination layer 2 identifier (destination L2 ID) correspond to the first link identifier.
  • authorized PC5 QoS parameters2 corresponds to the authorized quality of service parameters in the foregoing embodiment.
  • FIG. 10 for another communication method provided by an embodiment of this application, and the method includes:
  • the AMF network element receives the registration request message from the UE through the (R)AN.
  • the registration request message may include requested PC5 QoS parameters1, at least one service identifier.
  • the registration request message may further include a PC5 communication ID (communication ID), where the PC5 communication ID is used to characterize the PC5 communication link through which the UE transmits data of at least one service on the PC5 interface.
  • the PC5 communication link can consist of a source address and a destination address.
  • the source address is the source layer 2 identifier, for example, the layer 2 address (source L2 ID) of the UE
  • the destination address is the destination layer 2 identifier (destination L2 ID), for example, the layer 2 address of the UE that receives the data of the PC5 service.
  • the registration request message may also include a first mode indication, the first mode indication is used to indicate that the UE requests to transmit PC5 service data in the network scheduling mode on the PC5 interface, or the first mode indication is used to indicate that the UE It has the ability to transmit PC5 service data on the PC5 interface.
  • Step 1002 The AMF network element triggers a terminal policy control update (Npcf_UEPolicyControl_Update) message to the PCF network element.
  • Npcf_UEPolicyControl_Update a terminal policy control update
  • the PCF network element receives a service-oriented terminal policy control update message from the AMF network element.
  • the terminal policy control update message carries the requested PC5 QoS parameters1 requested by the UE in step 1001, and the identifier of at least one service.
  • the terminal policy control update message may also include the first mode indication and the PC5 communication identifier.
  • Step 1003 The PCF network element updates the UE's policy.
  • Step 1004 The PCF network element sends the N1N2 communication message transmission service to the AMF network element
  • the AMF network element receives Namf_Communication_N1N2Message Transfer from the PCF network element.
  • Namf_Communication_N1N2Message Transfer includes the PC5 interface Packet filter set.
  • the Namf_Communication_N1N2Message Transfer may also include the PC5 communication identifier.
  • Step 1005 The AMF network element transmits the UE's strategy to the UE.
  • the UE receives the UE's policy from the AMF network element.
  • the UE's policy may include the PC5 communication ID used to transmit the data of the permitted service, the ID of the permitted service, and the PC5 interface quality of service flow corresponding to the ID of the permitted service.
  • FIG. 11 for another communication method provided by an embodiment of this application, and the method includes:
  • Step 1101 the UE sends a service request message (Service Request message) to the AMF network element.
  • Service Request message Service Request message
  • the AMF network element receives the service request message from the UE.
  • the service request message can be used for the UE to request the transmission of at least one service data on the PC5 interface. Further, the service request message can be used for the UE to request the transmission of at least one service on the PC5 interface in network scheduled mode (network scheduled mode). The data.
  • the service request message may carry the identifier of at least one service.
  • this service please refer to the aforementioned related description.
  • the service request message also carries PC5 communication ID and/or operation (Operation) indication.
  • activate means that the UE requests activation to transmit the data of the above at least one service on the PC5 interface in the network scheduling mode.
  • activate can be represented by a preset value, for example, a preset binary "1" "Express.
  • the PCF network element receives the message 1 from the AMF network element.
  • the message 1 may carry the PC5 communication ID and the identification of at least one service.
  • message 1 may be an AM policy request (AM policy request).
  • the context corresponding to the PC5 communication ID may refer to: the context of the PC5 communication link associated with the PC5 communication ID, and the context of the PC5 communication link includes at least the authorized PC5 QoS parameters of the service transmitted on the PC5 communication link.
  • steps 1102 to 1103 are optional steps and may not be executed.
  • Step 1103 The PCF network element sends a response message 1 to the AMF network element.
  • the AMF network element receives the response message 1 from the PCF network element.
  • the response message 1 may include authorized PC5 QoS parameters (Authorized PC5 QoS parameters), the identifier of the allowed service, and the preferred scheduling mode of the PC5 service.
  • authorized PC5 QoS parameters Authorized PC5 QoS parameters
  • the identifier of the allowed service the identifier of the allowed service
  • the preferred scheduling mode of the PC5 service the preferred scheduling mode of the PC5 service.
  • the permitted service may be all or part of the at least one service, or the identifier of the permitted service may be obtained by the AMF network element from the subscription information of the UE.
  • the preferred scheduling mode of the PC5 service may be the network scheduling mode.
  • the preferred scheduling mode of the PC5 service may be carried in RRC Inactive Assistance Information (RRC Inactive Assistance Information).
  • the AMF network element can determine that the network side authorizes the UE to use the network scheduling mode to transmit data of allowed services on the PC5 interface.
  • the (R)AN device receives the N2 message from the AMF network element.
  • the N2 message may include the PC5 communication ID, the preferred scheduling mode of the PC5 service, the identifier of the allowed service, and the Authorized PC5 QoS parameters.
  • the preferred scheduling mode of the PC5 service may be carried in RRC Inactive Assistance Information (RRC Inactive Assistance Information), or the Authorized PC5 QoS parameters include the preferred scheduling mode of the PC5 service.
  • RRC Inactive Assistance Information RRC Inactive Assistance Information
  • Authorized PC5 QoS parameters include the preferred scheduling mode of the PC5 service.
  • the preferred scheduling mode of the PC5 service can be used to indicate to the (R)AN device, when the Uu between the (R)AN device and the UE is at a preset time ( For example, after 30s) there is no data, the (R)AN device needs to configure the UE to enter the RRC-inactive state, and when the UE is in the RRC-inactive state, the UE can continue to use the PC5 interface for network scheduling
  • the direct communication interface resource acquired by the mode sends the data of the allowed service.
  • the (R)AN device can determine through the preferred scheduling mode of the PC5 service that when the UE is in the RRC-inactive state, the UE can continue to use the direct communication interface obtained in the network scheduling mode on the PC5 interface The resource sends the data of the allowed service.
  • the N2 message may also include a service acceptance message (service accept message) sent by the AMF network element to the UE, and the service acceptance message (service accept message) includes an identifier of an allowed service.
  • the service acceptance message may also include the PC5 interface quality of service flow provided by the PCF network element.
  • the identifier of the allowed service can also be carried in the N1 container sent by the AMF network element to the UE through the (R)AN device.
  • Step 1105 The (R)AN device sends an RRC connection reconfiguration message to the UE.
  • the UE receives the RRC connection reconfiguration message from the (R)AN device.
  • the RRC connection reconfiguration message includes the identifier of the allowed service sent by the AMF network element to the UE.
  • the RRC connection reconfiguration message includes the PC5 interface quality of service flow provided by the PCF network element sent by the AMF network element to the UE.
  • the method provided in this embodiment of the present application may further include: step 1106.
  • step 1106 can be implemented in the following manner: the UE determines the PC5 interface quality of service flow of the first application according to the PC5 interface quality of service flow provided by the PCF network element, or the UE determines the PC5 interface quality of service of the first application according to pre-configured parameters flow.
  • the method may further include steps 1107 to 1112:
  • Step 1109 The UE uses the direct communication interface resources configured by the (R)AN device for the UE to transmit the data of the first application on the PC5 interface according to the quality of service flow of the PC5 interface of the first application.
  • the (R)AN device configures the terminal to enter the RRC-inactive state from the RRC-active (active) state.
  • the active state the RRC connection between the UE and the (R)AN device is released.
  • the UE receives the first indication information from the (R)AN device.
  • the first indication information is used to indicate that when the UE is in the RRC-inactive state, the UE can continue to use the direct communication interface resources configured by the (R)AN device for the UE to transmit data of allowed services on the PC5 interface.
  • Step 1112 when the UE is in the RRC-inactive state, the UE uses the direct communication interface resources configured by the (R)AN device for the UE to transmit the data of the first application on the PC5 interface according to the first indication information.
  • step 1111 is an optional step. Accordingly, step 1112 can be replaced with: when the UE is in the RRC-inactive state, the UE uses the direct communication interface resources configured by the (R)AN device for the UE in the PC5 The data of the first application is transmitted on the interface.
  • Authorized PC5 QoS parameters2 corresponds to the above-mentioned authorized quality of service parameters.
  • the service acceptance message may correspond to the foregoing fourth message.
  • the service request message may correspond to the first message in the foregoing embodiment.
  • the AMF network element receives the service request message from the UE.
  • the operation indication is used to indicate that the UE requests to activate the PC5 service, or the UE requests activation to transmit the PC5 service in the network scheduling mode.
  • the Operation indication is set to "activate”, which means that the UE requests to transmit the above-mentioned PC5 service data on the PC5 interface in the network scheduling mode.
  • the Operation is set to "activate”, which means that the UE requests activation to transmit the above-mentioned PC5 service data on the PC5 interface in the network scheduling mode.
  • “activate” can be represented by a preset value, for example, represented by a preset binary "1".
  • step 1201 can be implemented in the following manner: the UE sends a service request message to the (R)AN device.
  • the (R)AN device sends a NAS message to the AMF network element, and the NAS message includes a service request message.
  • Step 1202 the AMF network element sends an N2 message to the (R)AN device.
  • Step 1203 The (R)AN device sends an RRC connection reconfiguration message to the UE.
  • the UE receives the RRC connection reconfiguration message from the (R)AN device.
  • the RRC connection reconfiguration message includes a service acceptance message.
  • the foregoing steps 1201 to 1203 may be referred to as a service request procedure.
  • the method provided in this embodiment of the present application may further include: the UE requests the radio resource for transmitting the data of the PC5 service, and the UE uses The data of the PC5 service is transmitted in an energy-saving manner.
  • the UE transmitting the data of the PC5 service in an energy-saving manner may be the direct communication interface resource obtained by the UE in the network scheduling mode to transmit the data of the PC5 service. For example, step 1107 to step 1112 in FIG. 11.
  • FIG. 13 shows another embodiment provided by an embodiment of the present application, and this embodiment includes:
  • the service request message is used to indicate that the UE wishes to stop transmitting data on the PC5 interface, or used to indicate that it stops transmitting data on the PC5 interface using the network scheduling mode. Or, if the service request message also carries the identifier of the first application, the service request message is used to indicate that the UE wishes to stop transmitting the data of the first application on the PC5 interface.
  • the first application belongs to the allowed service of the UE.
  • the service request message contains an Operation indication. Operation instruction is set to "deactivate
  • (deactivate)" means that the UE wants to stop transmitting data on the PC5 interface.
  • Operation is set to “deactivate” means that the UE requests deactivation to transmit data on the PC5 interface in network scheduling mode.
  • Operation is set to “deactivate” (deactivate)” means that the UE wishes to stop transmitting the data of the first application on the PC5 interface.
  • “deactivate” can be represented by a preset value, for example, represented by a preset binary “0”.
  • Step 1303 The AMF network element sends an N2 message to the (R)AN device.
  • the Service Request message in the embodiment shown in FIG. 13 corresponds to the fourth message in the foregoing embodiment.
  • the embodiments of this application can divide functional units according to the above-mentioned method examples, access network equipment, terminals, and access management network elements.
  • each functional unit can be divided corresponding to each function, or two or more functions can be integrated.
  • a processing unit In a processing unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 14 shows the communication device involved in the foregoing embodiment, and the communication device may include: a communication unit 102 and a processing unit 101.
  • the communication device is a terminal or a chip applied in the terminal.
  • the communication unit 102 is used to support the communication device to perform the receiving action performed by the terminal in step 401 of FIG. 4 in the above-mentioned embodiment.
  • the processing unit 101 is configured to support the communication device to execute the processing actions executed by the terminal in step 402 of FIG. 4.
  • the communication unit 102 is also configured to support the communication device to execute the sending action performed by the terminal in step 402 in the foregoing embodiment.
  • the communication unit 102 is further configured to support the communication device to execute the sending actions performed by the terminal in step 501, step 503, step 504, step 506, step 509, and step 510 in the foregoing embodiment,
  • the communication unit 102 is also configured to support the communication device to execute the receiving actions performed by the terminal in step 502, step 505, and step 508 in the foregoing embodiment.
  • the communication module 113 is also used to support the communication device to execute the sending actions performed by the terminal in step 501, step 503, step 504, step 506, step 509, and step 510 in the foregoing embodiment,
  • the communication module 113 is also used to support the communication device to execute the receiving actions performed by the terminal in step 502, step 505, and step 508 in the foregoing embodiment.
  • the transceiver 33 is also used to support the communication device to perform the sending action performed by the access network device in step 508 in the foregoing embodiment.
  • the transceiver 33 is also used to support the communication device to perform the receiving action performed by the access network device in step 511 in the foregoing embodiment.
  • the processor 31 and/or the processor 35 are configured to support the communication device to execute the processing actions performed by the access network device in step 512 of the foregoing embodiment.
  • the communication device is an access management network element, or a chip applied to an access management network element.
  • the communication interface is used to support the communication device to perform the sending action performed by the access management network element in step 502 of FIG. 5 in the foregoing embodiment.
  • the processor 31 and/or the processor 35 are further configured to support the communication device to perform the action of determining the identity of one or more applications in the foregoing embodiment.
  • the memory 1540 stores the following elements, execution modules or data structures, or their subsets, or their extended sets.
  • a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium.
  • the instructions are executed, the functions of the terminal as shown in FIGS. 4 to 5 are realized.
  • a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium.
  • the instructions are executed, the functions of the access network device as shown in Figs. 4 to 5 are realized.
  • a computer program product including instructions.
  • the computer program product includes instructions. When the instructions are executed, the functions of the terminal as shown in Figs. 4 to 5 are realized.
  • a chip is provided.
  • the chip is applied to a terminal.
  • the chip includes at least one processor and a communication interface.
  • the communication interface is coupled to the at least one processor. Function.
  • An embodiment of the present application provides a communication system, which includes a terminal, an access management network element, and an access network device.
  • the terminal is used to perform the functions performed by the terminal in FIGS. 4 to 5
  • the access management network element is used to perform the steps performed by the access management network element in any one of 4 to FIG. 5.
  • the access network equipment is used to perform the functions performed by the access network equipment as shown in Figures 4 to 5.
  • the computer program or instruction may be transmitted from a website, a computer, or The server or data center transmits to another website site, computer, server or data center through wired or wireless means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that integrates one or more available media.
  • the usable medium may be a magnetic medium, such as a floppy disk, a hard disk, and a magnetic tape; it may also be an optical medium, such as a digital video disc (digital video disc, DVD); and it may also be a semiconductor medium, such as a solid state drive (solid state drive). , SSD).

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  • Engineering & Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de l'invention se rapportent au domaine technique des communications, et l'invention concerne un procédé, un appareil et un système permettant de réduire la consommation d'énergie d'un terminal lors de la transmission de données sur une interface de communication directe. La solution comprend les étapes suivantes : un terminal reçoit des informations de ressources d'un dispositif de réseau d'accès, les informations de ressources étant utilisées pour représenter les ressources d'une interface de communication directe ; et le terminal transmet des données au moyen des ressources de l'interface de communication directe, et le terminal est dans un état inactif de commande de ressources radio (RRC). Selon le procédé décrit dans les modes de réalisation de l'invention, lorsqu'un terminal est dans un état inactif RRC, des données peuvent encore être transmises à l'aide des ressources d'une interface de communication directe à partir d'un dispositif de réseau d'accès. Par conséquent, la consommation d'énergie d'un terminal lors de la transmission de données sur une interface de communication directe peut être réduite. De plus, ladite solution peut être appliquée à un scénario de communication directe.
PCT/CN2020/087332 2020-04-27 2020-04-27 Procédé, appareil et système de communication WO2021217376A1 (fr)

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CN202080073459.8A CN114586394A (zh) 2020-04-27 2020-04-27 一种通信方法、装置以及系统

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